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ronin/README.md
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# Ronin
<img src="https://raw.githubusercontent.com/hundredrabbits/100r.co/master/media/content/characters/ronin.hello.png" width="300"/>
Ronin is a <b>procedural graphics tool</b> designed to automate simple graphical tasks, like resizing, cropping, coloring, and generating algorithmic images. It interprets a minimal <a href="https://en.wikipedia.org/wiki/Lisp_(programming_language)" target="_blank" rel="noreferrer" class="external ">dialect of LISP</a>, look at these <a href="https://github.com/hundredrabbits/Ronin/tree/master/examples" target="_blank" rel="noreferrer" class="external ">examples</a> to better understand how this all works.
The library updates is constantly revealing new applications to Ronin, you can see the list of available functions <a href="https://github.com/hundredrabbits/Ronin#library" target="_blank" rel="noreferrer" class="external ">here</a>. Most of our iconography and designs were created with both <a href="https://hundredrabbits.itch.io/Ronin" target="_blank">Ronin</a> and <a href="https://hundredrabbits.itch.io/dotgrid">Dotgrid</a>.
Learn more by reading the <a href="https://github.com/Hundredrabbits/Ronin" target="_blank" rel="noreferrer" class="external ">manual</a>, or have a look at some experiments on <a href="https://twitter.com/neauoire/status/1152481692193419267" target="_blank" rel="noreferrer" class="external ">twitter</a>. If you need <b>help</b>, visit the <a href="https://hundredrabbits.itch.io/ronin/community" target="_blank" rel="noreferrer" class="external ">Community</a>, follow the [workshop](https://github.com/hundredrabbits/Ronin/blob/master/WORKSHOP.md) or watch the [video tutorial](https://www.youtube.com/watch?v=SgAWGh1s9zg).
```lisp
; draw a red square
(stroke
(rect 30 30 100 100) "red" 2)
```
## Install & Run
You can download [builds](https://hundredrabbits.itch.io/ronin) for **OSX, Windows and Linux**, or if you wish to build it yourself, follow these steps:
```
git clone https://github.com/hundredrabbits/Ronin.git
cd Ronin/desktop/
npm install
npm start
```
<img src='https://raw.githubusercontent.com/hundredrabbits/Ronin/master/PREVIEW.jpg' width='600'/>
## Helpers
Ronin helpers are keywords that facilitates adding coordinates from the canvas into your script. The currently supported helpers are `$rect`, `$pos`, `$circle`, `$line`, `$drag` and `$view`. Holding right-click while using a $helper will run the script as the mouse is injecting coordinates into the script. Paste the following script, and trace a shape in the canvas:
```lisp
; draw a red circle
(fill $circle "red")
```
## Library
- `(import path shape)` Imports a graphic file with format.
- `(export path ~format ~quality)` Exports a graphic file with format.
- `(open path ~ratio)` Imports a graphic file and resizes the frame.
- `(move x y)`
- `(rotate angle)`
- `(scale x y)`
- `(transform a b c d e f)`
- `(setTransform a b c d e f)`
- `(resetTransform)`
- `(pushTransform)`
- `(popTransform)`
- `(pos ~x ~y)` Returns a position shape.
- `(size w h)` Returns a size shape.
- `(rect x y w h)` Returns a rect shape.
- `(circle cx cy r)` Returns a circle shape.
- `(ellipse cx cy rx ry)` Returns a ellipse shape.
- `(line ax ay bx by)` Returns a line shape.
- `(text x y p t ~a ~f)` Returns a text shape.
- `(svg x y d)` Returns a svg shape.
- `(color r g b ~a)` Returns a color object.
- `(offset a b)` Offsets pos a with pos b, returns a.
- `(stroke shape color ~thickness)` Strokes a shape.
- `(fill ~rect)` Fills a shape.
- `(gradient line ~colors 'black'])` Defines a gradient color.
- `(guide shape color)` Draws a shape on the guide layer.
- `(clear ~rect)` Clears a rect.
- `(rgba r g b ~a)` Defines a color r, g, b values are from 0 to 255, a from 0 to 1
- `(hsla h s l ~a)` Defines a color h from 0 to 360, s and l from 0 to 100, a from 0 to 1
- `(frame)` Returns a rect of the frame.
- `(center)` Returns a position of the center of the frame.
- `(resize w h ~fit)` Resizes the canvas to target w and h, returns the rect.
- `(rescale w h)` Rescales the canvas to target ratio of w and h, returns the rect.
- `(crop rect)` Crop canvas to rect.
- `(clone a b)`
- `(drag ~rect)` Drag a part of the canvas.
- `(view a b)` View a part of the canvas.
- `(pick ~shape)` Returns the color of a pixel at pos, or of the average of the pixels in rect.
- `(theme variable ~el)`
- `(pixels fn ~q ~rect)`
- `(saturation pixel q)` Change the saturation of pixels.
- `(contrast pixel q)` Change the contrast of pixels.
- `(brightness pixel q)` Change the brightness of pixels.
- `(additive pixel q)` Condense the data of pixels.
- `(multiply pixel q)` Change the color balance of pixels.
- `(normalize pixel q)` Normalize the color of pixels with another color.
- `(luminance color)` Get the luminance of a color.
- `(concat ...items)` Concat multiple strings.
- `(split string char)` Split string at character.
- `(add ...args)` Adds values.
- `(sub ...args)` Subtracts values.
- `(mul ...args)` Multiplies values.
- `(div ...args)` Divides values.
- `(mod a b)` Returns the modulo of a and b.
- `(clamp val min max)` Clamps a value between min and max.
- `(step val step)`
- `(min)` Clamp value from.
- `(max)` Clamp value at.
- `(ceil)` Round up to the nearest integer.
- `(floor)` Round down to the nearest integer.
- `(sin)`
- `(cos)`
- `(log)` Caclulates on the base.
- `(pow a b)` Calculates a^b.
- `(sqrt)` Calculate the square root.
- `(sq a)` Calculate the square.
- `(PI)`
- `(TWO_PI)`
- `(random ...args)`
- `(gt a b)` Returns true if a is greater than b, else false.
- `(lt a b)` Returns true if a is less than b, else false.
- `(eq a b)` Returns true if a is equal to b, else false.
- `(and a b ...rest)` Returns true if all conditions are true.
- `(or a b ...rest)` Returns true if at least one condition is true.
- `(each arr fn)` Run a function for each element in a list.
- `(map arr fn)` Run a function on each element in a list.
- `(filter arr fn)` Remove from list, when function returns false.
- `(reduce arr fn acc)`
- `(len item)` Returns the length of a list.
- `(first arr)` Returns the first item of a list.
- `(last arr)` Returns the last
- `(rest [_ ...arr])`
- `(range start end ~step)`
- `(get item key)` Gets an object's parameter with name.
- `(set item ...args)` Sets an object's parameter with name as value.
- `(of h ...keys)` Gets object parameters with names.
- `(keys item)` Returns a list of the object's keys
- `(values item)` Returns a list of the object's values
- `(convolve kernel ~rect)`
- `(blur)`
- `(sharpen)`
- `(edge)`
- `(dir ~path)` Returns the content of a directory.
- `(file ~path)` Returns the content of a file.
- `(dirpath ~path)` Returns the path of a directory.
- `(filepath ~path)` Returns the path of a file.
- `(dirname ~path)` Returns the name of a folder.
- `(filename ~path)` Returns the name of a file.
- `(exit ~force)` Exits Ronin.
- `(echo ...args)` Print arguments to interface.
- `(debug arg)` Print arguments to console.
- `(time ~rate)` Returns timestamp in milliseconds.
- `(js)` Javascript interop.
- `(on event f)` Triggers on event.
- `(test name a b)`
- `(benchmark fn)` Logs time taken to execute a function.
<img src='https://raw.githubusercontent.com/hundredrabbits/Ronin/master/PREVIEW2.jpg' width='600'/>
<img src='https://raw.githubusercontent.com/hundredrabbits/Ronin/master/PREVIEW3.jpg' width='600'/>
## Extras
- This application supports the [Ecosystem Theme](https://github.com/hundredrabbits/Themes).
- Support this project through [Patreon](https://patreon.com/100).
- See the [License](LICENSE.md) file for license rights and limitations (MIT).
- Pull Requests are welcome!
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